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POWER OPERATIONAL AMPLIFIERS
PA03 * P03A
MICROTECHNOLOGY
HTTP://WWW.APEXMICROTECH.COM
(800) 546-APEX
(800) 546-2739
FEATURES
* MO-127 COPPER POWER DIPTM PACKAGE * HIGH INTERNAL POWER DISSIPATION -- 500 watts * HIGH VOLTAGE OPERATION -- 75V * VERY HIGH CURRENT -- 30 amps * INTERNAL SOA PROTECTION * OUTPUT SWINGS CLOSE TO SUPPLY RAILS * EXTERNAL SHUTDOWN CONTROL
APPLICATIONS
* * * * LINEAR AND ROTARY MOTOR DRIVES YOKE/MAGNETIC FIELD DEFLECTION PROGRAMMABLE POWER SUPPLIES to 68V TRANSDUCER/AUDIO TO 1000W
TYPICAL APPLICATION
+VS POSITION FEEDBACK RBAL +5V SHUT DOWN 0/10V DAC R1 DESIRED POSITION + +S -S PA03 - -VS C1 R2
DESCRIPTION
The super power PA03 advances the state of the art in both brute force power and self protection against abnormal operating conditions. Its features start with a copper dip package developed by Apex to extend power capabilities well beyond those attainable with the familiar TO-3 package. The increased pin count of the new package provides additional control features, while the superior thermal conductivity of copper allows substantially higher power ratings. The PA03 incorporates innovative current limiting circuits limiting internal power dissipation to a curve approximating the safe operating area of the power transistors. The internal current limit of 35A is supplemented with thermal sensing which reduces the current limit as the substrate temperature rises. Furthermore, a subcircuit monitors actual junction temperatures and with a response time of less than ten milliseconds reduces the current limit further to keep the junction temperature at 175C. The PA03 also features a laser trimmed high performance FET input stage providing superior DC accuracies both initially and over the full temperature range.
OBJECT TOOL
The PA03 output power stages contain fast reverse recovery diodes for sustained high energy flyback protection. This hybrid integrated circuit utilizes thick film resistors, ceramic capacitors and silicon semiconductors to maximize reliability, minimize size and give top performance. Ultrasonically bonded aluminum wires provide reliable interconnections at all operating temperatures. The MO-127 Copper, 12-pin Power DipTM package (see Package Outlines), is hermetically sealed and isolated from the internal circuits. Insulating washers are not recommended. IMPORTANT: Observe mounting precautions.
EQUIVALENT SCHEMATIC
8 11 12
+V BAL BAL D1 Q2 Q5 Q17 Q3 Q12 4 +SHUT Q18 DOWN Q22 3 -SHUT DOWN Q29 Q14 9 COMP 10 Q19 Q24 Q30 Q16 Q6 Q7 Q9 D2 Q1 Q4
+ 7 6 -
1
-
OUT
Q20 A
Q20 B
2
+ Q31
Q32
Q26
D3
D4 5 -V
Q34
APEX MICROTECHNOLOGY CORPORATION * TELEPHONE (520) 690-8600 * FAX (520) 888-3329 * ORDERS (520) 690-8601 * EMAIL prodlit@apexmicrotech.com
PA03 * PA03A
ABSOLUTE MAXIMUM RATINGS
SUPPLY VOLTAGE, +VS to -VS OUTPUT CURRENT, within SOA POWER DISSIPATION, internal INPUT VOLTAGE, differential INPUT VOLTAGE, common mode TEMPERATURE, pin solder-10s TEMPERATURE, junction1 TEMPERATURE RANGE, storage OPERATING TEMP. RANGE, case SHUTDOWN VOLTAGE, differential SHUTDOWN VOLTAGE, common mode 150V Internally limited 500W 25V VS 300C 175C -65 to +150C -55 to +125C 5V VS
-INPUT +INPUT -SHUT DN +SHUT DN -SUPPLY -OUTPUT
ABSOLUTE MAXIMUM RATINGS SPECIFICATIONS
EXTERNAL CONNECTIONS
BALANCE CONTROL BALANCE CONTROL PHASE COMP. PHASE COMP. +SUPPLY +OUTPUT Pins 6 & 7 must be connected together. If unused, tie Pins 11 & 12 to +SUPPLY. IMPORTANT: OBSERVE MOUNTING PRECAUTIONS. REVERSE INSERTION WILL DESTROY UNIT.
1 2 3 4 5 6
12 11 TOP VIEW 10 9 8 7
SPECIFICATIONS
PARAMETER INPUT OFFSET VOLTAGE, initial OFFSET VOLTAGE, vs. temperature OFFSET VOLTAGE, vs. supply OFFSET VOLTAGE, vs. power BIAS CURRENT, initial BIAS CURRENT, vs. supply OFFSET CURRENT, initial INPUT IMPEDANCE, DC INPUT CAPACITANCE COMMON MODE VOLTAGE RANGE3 COMMON MODE REJECTION, DC SHUTDOWN CURRENT4 SHUTDOWN VOLTAGE SHUTDOWN VOLTAGE GAIN OPEN LOOP GAIN at 10Hz GAIN BANDWIDTH PRODUCT at 1MHz POWER BANDWIDTH PHASE MARGIN OUTPUT VOLTAGE SWING3 VOLTAGE SWING3 VOLTAGE SWING3 CURRENT, peak SETTLING TIME to .1% SLEW RATE CAPACITIVE LOAD SHUTDOWN DELAY POWER SUPPLY VOLTAGE CURRENT, quiescent6 CURRENT, disable mode THERMAL RESISTANCE, AC junction to case5 RESISTANCE, DC junction to case RESISTANCE, junction to ambient TEMPERATURE, junction TEMPERATURE RANGE, case NOTES: * 1. 2. 3. 4. 5. 6. Full temp. range, F>60Hz Full temp. range, F<60Hz Full temperature range Sustained operation Meets full range specification Full temperature range TC = 25C Full temperature range 15 TC = 25C, IO = 30A Full temp. range, IO = 12A Full temp. range, IO = 146mA TC = 25C TC = 25C, 10V step TC = 25C, CC - open Full temp. range, AV = 1 TC = -25C, disable TC = -25C, operate VS -7 VS -5 VS -4 30 2 Full temp. range, full load TC = 25C, full load TC = 25C, IO = 15A, VO = 88VPP Full temp. range, CC = 1.8nF 92 TC = 25C Full temperature range TC = 25C Full temperature range TC = 25C TC = 25C TC = 25C TC = 25C TC = 25C Full temperature range Full temp. range, VCM = 20V Full temperature range Full temp. range, amp enabled Full temp. range, amp disabled TEST CONDITIONS 2 MIN
PA03 TYP MAX MIN
PA03A TYP MAX UNITS
VS -10V 86 3.5
.5 10 8 20 5 .01 2.5 1011 6 108 100
2 30 50 50 * * .85 *
.25 5 * 10 3 * 1.5 * * * *
.5 10 10 10
*
mV V/C V/V V/W pA pA/V pA pF V dB A V V dB MHz kHz V V V A s V/s nF s s
102 1 30 65 6.2 4.2 3.5 8 8
*
* * * * * * * * *
* * * * *
10 20 50 125 25 .22 .25 14 - 25 75 300 40 .28 .3 150 85 * *
* * * * * * * * * * * * * * *
V mA mA C/W C/W C/W C C
CAUTION
The specification of PA03A is identical to the specification for PA03 in applicable column to the left. Long term operation at the maximum junction temperature will result in reduced product life. Derate power dissipation to achieve high MTTF. The power supply voltage for all specifications is the TYP rating unless noted as a test condition. +VS and -VS denote the positive and negative supply rail respectively. Total VS is measured from +VS to -VS. Rating applies if both shutdown inputs are least 1V inside supply rails. If one of the shutdown inputs is tied to a supply rail, the current in that pin may increase to 2.4mA. Rating applies if the output current alternates between both output transistors at a rate faster than 60Hz. The PA03 must be used with a heatsink or the quiescent power may drive the unit into thermal shutdown. The internal substrate contains beryllia (BeO). Do not break the seal. If accidentally broken, do not crush, machine, or subject to temperatures in excess of 850C to avoid generating toxic fumes.
APEX MICROTECHNOLOGY CORPORATION * 5980 NORTH SHANNON ROAD * TUCSON, ARIZONA 85741 * USA * APPLICATIONS HOTLINE: 1 (800) 546-2739
TYPICAL PERFORMANCE GRAPHS
PA03 * PA03A
NORMALIZED BIAS CURRENT, I B (X)
256 64 16 4 1 .25 .06 -15
INTERNAL POWER DISSIPATION, P(W)
500 400 300 200 100 0 0
POWER DERATING
BIAS CURRENT
50
CURRENT LIMIT
CURRENT LIMIT, I LIM (A)
5 45 65 85 105 25 CASE TEMPERATURE, TC (C)
40 30 20 10 0 25 50 75 100 125 -50 -25 0 CASE TEMPERATURE, TC (C)
40 80 120 160 200 CASE TEMPERATURE, TC (C)
SMALL SIGNAL RESPONSE
120 0 100 80
PHASE RESPONSE
VOLTAGE DROP FROM SUPPLY (V)
7 6 5 4 3 2 1 0
OUTPUT VOLTAGE SWING
CC
CC
OPEN LOOP GAIN, A (dB)
-30
=O PE
PHASE, ()
-60 -90
TC
5C
=-
55
C
=1 80
N
0p F
CC
60 40 20 0 -20 1 CC = 470pF
10 100 1K 10K .1M 1M 10M FREQUENCY, F (Hz) 7.5 5.0 2.5
COMMON MODE REJECTION, CMR (dB)
INPUT NOISE VOLTAGE, VN (nV/ Hz)
COMMON MODE REJECTION
120 100 80
VOLTS
= O PE N
00 pF = CC 18
-120 -150 -180 -210 1 10 100 1K 10K .1M 1M 10M FREQUENCY, F (Hz)
TC
=2
TC
=1
25
C
5 20 25 10 15 OUTPUT CURRENT, IO (A)
30
PULSE RESPONSE
VIN = .5V, AV = 10 RL =.5
20
INPUT NOISE
10
60 40 20 0 1 10 100 1K 10K .1M 1M FREQUENCY, F (Hz)
0 -2.5 -5.0 -7.5
6
4
0
5
10 15 20 TIME, t (S)
25
30
2
10
100 10K 1K FREQUENCY, F (Hz)
.1M
1.0 0.3
HARMONIC DISTORTION
1.4 VS = 50V AV = 10 PO = 200W RL = 4
QUIESCENT CURRENT
OUTPUT VOLTAGE, VO (VPP)
POWER RESPONSE
150 100
1.2
NORMALIZED, IQ (X)
DISTORTION, (%)
TC
1.0 .8 .6 .4
25 =1
C
0.1 .03 .01
TC
5C
=2
5C
CC
TC
TC = 8
=-
25
C
CC
PE =O
50 40 30 20
=4 70
CC =1 0 80
N
pF
pF
.003 30
100 300 1K 3K 10K 30K FREQUENCY, F (Hz)
40 60 80 100 120 140 TOTAL SUPPLY VOLTAGE, VS (V)
10
3K 5K
10K 50K 100K FREQUENCY, F (Hz)
300K
APEX MICROTECHNOLOGY CORPORATION * TELEPHONE (520) 690-8600 * FAX (520) 888-3329 * ORDERS (520) 690-8601 * EMAIL prodlit@apexmicrotech.com
PA03 * PA03A
GENERAL
Please read the "General Operating Considerations" section, which covers stability, supplies, heatsinking, mounting, current limit, SOA interpretation, and specification interpretation. Additional information can be found in the application notes. For information on the package outline, heatsinks, and mounting hardware, consult the "Accessory and Package Mechanical Data" section of the handbook.
OPERATING CONSIDERATIONS
OUTPUT STAGE SHUTDOWN
The entire power stage of the PA03 may be disabled using one of the circuits shown in Figure 1. There are many applications for this function. One is a load protection based on power delivered to the load or thermal rise. Another one is conservation of power when using batteries. The control voltage requirements accommodate a wide variety logic drivers. 1. CMOS operating at +5V can drive the control pins directly. 2. CMOS operating at greater than 5V supplies need a voltage divider. 3. TTL logic needs a pull up resistor to +5V to provide a swing to the fully disabled voltage (3.5V). When not using the shutdown feature, connect both pins 3 and 4 to common.
MOUNTING PRECAUTIONS
The PA03 copper base is very soft and easily bent. Do not put any stress on the mounting ears of this package. This calls for caution when pushing the amplifier into certain types of packaging foam and particularly when inserting the device into a socket. Insert the amplifier into the socket only by pushing on the perimeter of the package lid. Pushing the unit into the socket by applying pressure to the mounting tabs will bend the base due to the high insertion force required. The base will then not contact the heatsink evenly resulting in very poor heat transfer. To remove a unit from a socket, pry the socket away from the heatsink so that the heatsink will support the amplifier base evenly. Recommended mounting torque is 8-10 in.-lbs. (.9-1.13 N*m).
PHASE COMPENSATION
At low gain settings an external compensation capacitor is required to insure stability. In addition to the resistive feedback network, roll off or integrating capacitors must also be considered. A frequency of 1 MHz is most appropriate to calculate gain. Operation at gains below 10, without the external compensation capacitor opens the possibility of oscillations near output saturation regions when under load, the improper operation of the thermal shutdown circuit. This can result in amplifier destruction.
SAFE OPERATING AREA (SOA)
Due to the internal (non-adjustable) current limit of the PA03, worst case power dissipation calculations must assume current capability of 46 amps. Application specific circuits should be checked against the SOA curve when relying upon current limit for fault protection.
At gains of 10 or more:
1. No external components are required. 2. Typical slew rate will be 8V/s. 3. Typical phase margin will be 70.
At a gain of 3:
1. Connect a 470pF compensation capacitor between pins 9 and 10. 2. Typical slew rate will be 5V/s. 3. Typical phase margin will be 45.
SAFE OPERATING AREA CURVES
Second breakdown limitations do apply to the PA03 but are less severe, since junction temperature limiting responds within 10ms. Stress levels shown as being safe for more than 10ms duration 40 will merely CURRENT LIMIT ZONE 30 100 cause thermal TH 1.0 mS ER mS MA shutdown. L 10 mS Under nor10 mal operating dc conditions, ac5 tivation of the thermal shutdown is a sign TC = 25C that the internal junction 1 temperatures 10 20 50 100 150 have reached SUPPLY TO OUTPUT DIFFERENTIAL VS -VO (V) approximately 175C. Thermal shutdown is a short term safety feature. If the conditions remain that cause thermal shutdown, the amplifier will oscillate in and out of shutdown, creating peak high power stresses, destroying useful signals, and reducing the reliability of the device.
OUTPUT CURRENT FROM +VS OR -VS (A)
SE CO ND BR EA KD OW N
At unity gain:
1. Connect a 1.8nF compensation capacitor between pins 9 and 10. 2. Typical slew rate will be 1.8V/s. 3. Typical phase margin will be 65.
FIGURE 1a. DIRECT DRIVE OF SHUTDOWN
+5V 500 4 1K * 0 = OPERATE 1 = SHUT DN 3 500 Q22 PA03 Q14 1K * NOT REQUIRED WHEN USING CMOS LOGIC
+15V PA03 0 = SHUT DN CMOS 1 = OPERATE 2R 4 R 500 Q14 1K 3 500 Q22
FIGURE 1b. HIGH VOLTAGE LOGIC INTERFACE FIGURE 1c. THERMALLY ACTIVATED SHUTDOWN
+VS R1 ** R2 4.7K
BALANCE CONTROL
The voltage offset of the PA03 may be externally adjusted to zero. To implement this adjustment install a 100 to 200 ohm potentiometer between pins 11 and 12 and connect the wiper arm to the positive supply. Bypass pins 11 and 12 each with at least a .01F ceramic capacitor. If the optional adjust provision is not used, connect both pins 11 and 12 to the positive supply.
500 4 Q14 1K 3 500 Q22
PA03
360- 400mV ** SELECT SHUTOFF TEMPERATURE SELECT R4 FOR 5V DROP ON R2 R3 360
R4 30K LOAD THERMAL SENSE TRANSISTOR
This data sheet has been carefully checked and is believed to be reliable, however, no responsibility is assumed for possible inaccuracies or omissions. All specifications are subject to change without notice. PA03U REV. I FEBRUARY 1998 (c) 1998 Apex Microtechnology Corp.

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